A Royal Canadian Mounted Police (RCMP) officer watches as Canadians who had been evacuated by an American plane from China due to the outbreak of novel Coronavirus board a second aircraft to Canadian Forces Base (CFB) Trenton at Vancouver International Airport in Richmond, British Columbia, Canada February 7, 2020. Courtesy of Edward Wang via REUTERS.

Passengers wait to board a flight, chartered by the U.S. State Department to evacuate Americans and Canadians from China due to the outbreak of novel Coronavirus, at Wuhan Tianhe International Airport in Wuhan, China February 7, 2020. Courtesy of Edward Wang via REUTERS.

Staff wearing protective suits check passengers arriving to board a flight, chartered by the U.S. State Department to evacuate Americans and Canadians from China due to the outbreak of novel Coronavirus, at Wuhan Tianhe International Airport in Wuhan, China February 7, 2020. Courtesy of Edward Wang via REUTERS.

Canadian Forces personnel load luggage onto a bus for Canadians, who had been evacuated from China due to the outbreak of novel Coronavirus on an American charter plane, as they disembark from another aircraft at Canadian Forces Base (CFB) Trenton in Trenton, Ontario, Canada February 7, 2020. Courtesy of Edward Wang via REUTERS.

An ambulance stands by as Canadians who had been evacuated by an American plane from China due to the outbreak of novel Coronavirus board a second aircraft to Canadian Forces Base (CFB) Trenton at Vancouver International Airport in Richmond, British Columbia, Canada February 7, 2020. Courtesy of Edward Wang via REUTERS.

Passengers enter a cargo plane, chartered by the U.S. State Department to evacuate Americans and Canadians from China due to the outbreak of novel Coronavirus, during the boarding process at Wuhan Tianhe International Airport in Wuhan, China February 7, 2020. Courtesy of Edward Wang via REUTERS.

A road to Wuhan Tianhe International Airport is seen deserted due to the outbreak of novel Coronavirus in Wuhan, China February 7, 2020. Courtesy of Edward Wang via REUTERS.

Security officers check passengers arriving to board a flight, chartered by the U.S. State Department to evacuate Americans and Canadians from China due to the outbreak of novel Coronavirus, at Wuhan Tianhe International Airport in Wuhan, China February 7, 2020. Courtesy of Edward Wang via REUTERS.

Chairs and a children's play area are set aside for Canadians, who had been evacuated from China due to the outbreak of novel Coronavirus, at Canadian Forces Base (CFB) Trenton in Trenton, Ontario, Canada, February 7, 2020. Courtesy of Edward Wang via REUTERS.

Canada Border Services Agency (CBSA) agents await Canadians who had been evacuated by an American plane from China due to the outbreak of novel Coronavirus, before they board a second aircraft to Canadian Forces Base (CFB) Trenton at Vancouver International Airport in Richmond, British Columbia, Canada February 7, 2020. Courtesy of Edward Wang via REUTERS.

Passengers queue to board a cargo plane, chartered by the U.S. State Department to evacuate Americans and Canadians from China due to the outbreak of novel Coronavirus, at Wuhan Tianhe International Airport in Wuhan, China February 7, 2020. Courtesy of Edward Wang via REUTERS. Image used for illustrative purpose.

A road to Wuhan Tianhe International Airport is seen deserted due to the outbreak of novel Coronavirus in Wuhan, China February 7, 2020. Courtesy of Edward Wang via REUTERS.

Canada Border Services Agency (CBSA) agents await passengers disembarking on a walkway from a cargo plane, chartered by the U.S. State Department to evacuate Americans and Canadians from China due to the outbreak of novel Coronavirus, at Vancouver International Airport in Richmond, British Columbia, Canada February 7, 2020. Courtesy of Edward Wang via REUTERS.

Passengers queue to board a cargo plane, chartered by the U.S. State Department to evacuate Americans and Canadians from China due to the outbreak of novel Coronavirus, at Wuhan Tianhe International Airport in Wuhan, China February 7, 2020. Courtesy of Edward Wang via REUTERS.

Passengers enter a cargo plane, chartered by the U.S. State Department to evacuate Americans and Canadians from China due to the outbreak of novel Coronavirus, during the boarding process at Wuhan Tianhe International Airport in Wuhan, China February 7, 2020. Courtesy of Edward Wang via REUTERS.

Canadian Forces personnel stand by to assist Canadians, who had been evacuated from China due to the outbreak of novel Coronavirus on an American charter plane, as they disembark from another aircraft at Canadian Forces Base (CFB) Trenton in Trenton, Ontario, Canada February 7, 2020. Courtesy of Edward Wang via REUTERS.

Canadians, who had been evacuated from China on an American charter plane due to the outbreak of novel Coronavirus, arrive in a hangar after flying on a second aircraft at Canadian Forces Base (CFB) Trenton in Trenton, Ontario, Canada, February 7, 2020. Courtesy of Edward Wang via REUTERS.

Staff wearing protective suits check passengers arriving to board a flight, chartered by the U.S. State Department to evacuate Americans and Canadians from China due to the outbreak of novel Coronavirus, at Wuhan Tianhe International Airport in Wuhan, China February 7, 2020. Courtesy of Edward Wang via REUTERS.

Staff wearing protective masks wait at a desk marked with a Canadian flag to check passengers arriving to board a flight, chartered by the U.S. State Department to evacuate Americans and Canadians from China due to the outbreak of novel Coronavirus, at Wuhan Tianhe International Airport in Wuhan, China February 7, 2020. Courtesy of Edward Wang via REUTERS.

Staff from the U.S. embassy walk in a cargo plane, chartered by the U.S. State Department to evacuate Americans and Canadians from China due to the outbreak of novel Coronavirus, during the boarding process at Wuhan Tianhe International Airport in Wuhan, China February 7, 2020. Courtesy of Edward Wang via REUTERS.

A Flight attendant wearing protective clothing and a mask serves snacks to Canadians, who had been evacuated from China due to the outbreak of novel Coronavirus on an American charter plane, on another aircraft taking them to Canadian Forces Base (CFB) Trenton, from Vancouver International Airport in Richmond, British Columbia, Canada February 7, 2020. Courtesy of Edward Wang via REUTERS.

Canadians, who had been evacuated from China due to the outbreak of novel Coronavirus on an American charter plane, arrive in a hangar after flying on a second aircraft at Canadian Forces Base (CFB) Trenton in Trenton, Ontario, Canada February 7, 2020. Courtesy of Edward Wang via REUTERS.

Staff from the U.S. embassy board a cargo plane, chartered by the U.S. State Department to evacuate Americans and Canadians from China due to the outbreak of novel Coronavirus, during the boarding process at Wuhan Tianhe International Airport in Wuhan, China February 7, 2020. Courtesy of Edward Wang via REUTERS.

Security officer wearing protective masks watch passengers arriving to board a flight, chartered by the U.S. State Department to evacuate Americans and Canadians from China due to the outbreak of novel Coronavirus, at Wuhan Tianhe International Airport in Wuhan, China February 7, 2020. Courtesy of Edward Wang via REUTERS.